Profit-taking and a weak PMI reading for May knocks VNI back below 520 The market looked on pace to recover from last Friday’s profit-taking but was once again knocked down at the 520 resistance as blue-chips were sold off in the closing minutes of the afternoon trading session. GAS, VNM and PPC were the biggest drag on the VNI. PPC fell 4.5% to close at VND25,600, its largest single day decline since peaking at VND27,700 on 28 May.